Originally Posted by M@RS
I'd consider it more like speculation. Noah had to use common sense (and logic). If the adults are too big, then take the babies.
Unless "Noah" was a myth, borrowed from an earlier civilization and greatly embellished for the Canaan/Israelite cults of the Bronze/Iron Age, for which there is far more evidence than such speculations.
Even if we were to entertain a speculation such as yours as a thought experiment, we would necessarily have to factor the growth rates of juvenile animals, the actual spaces they require (which are still not trivial), their feed, waste, and special needs (depending on their ages, some need special treatments to food that are provided by parents). Such a speculation quickly becomes illogical, unreasoned, and irrational. At this point, Occam's Razor takes over and the more parsimonious explanation of noachian myth
takes over and we can dismiss literal interpretation of biblical stories as the poetry, stories, and propaganda of one culture emerging from another.